Structure of the hair
What is the outermost layer of the hair shaft?
Cuticle
Which bond is the weakest and what is it broken by?
Hydrogen bonds broken by water or heat
What is the short, fine, unpigmented downy hair that appears on the body?
Vellus Hair
How many hair growth treatments have been approved by the FDA?
What % of the hair's weight comes from the cortex?
90%
What refers to the shape of the hair strand and what are the 3 classifications?
Wave pattern
Straight, wavy, curly, coily
On average how often does the entire growth cycle repeat
Every 4-5 years
What is the miniaturization of terminal hair that’s converted to vellus hair (Also known as male pattern baldness in men)
Androgenic Alopecia